Revolving door



Aug. 1l, 1936. AE. PEREMrE-r AL 2,051,008

' REvoLvING DOOR Filed June l, 1955 2 Sheets-Sheet l ATTORNEYS.

Aug. 11, 1936.

E. PEREMI Er AL REVOLVING DOOR lFiled June l, 1935 2 Sheets-Sheet 2 INVENTORS fana/v0 Hwfn/ C HA @L55 f/SH' ATTORNEYS Patented Aug. 11, 1936 ECE REVOLVING DOOR Edmund Peremi, Manh Elmhurst, N. Y., assignors Corporation, Long Isl ration of New York asset, and Charles Kish, to- General Bronze and City, N. Y., a corpo- Application June 1,'1935, Serial No. 24,492

7 Claims.

This invention relates to revolving doors, and more particularly to revolving doors of the type in which provision is made of a governorfor limiting the speed at which the door can be turned.

Features of the invention relate to the provision of improved governing means and improvements in the arrangement and relation'of the governing means with reference to the door proper.

The present application is a continuation in part of our pending application, Serial No. 633,584, led September 17, 1932, for Revolving doors.

Other objects and advantages will hereinafter appear.

In the drawings tion,

Fig. 1 is a diagrammatic view, partly in side elevation, and partly in vertical section, showing a door housing with a trolley mounted above the same and the door depending from-said trolley, the door being shown folded and swung to one side so as to release a latch whichnormally holds the trolley and door against bodily movement to the side of the door opening;

Fig. 2 is a fragmentary plan view of adoor supporting trolley and governor mechanism mounted thereon, the cover of the governor mechanism being removed;

Fig. 3 is a detail vertical 3 3 of Fig. 2;

Fig. lis a detail vertical sectional view on the line 4 4 of Fig. 2, and

Fig. 5 is a longitudinal vertical section taken approximately on the line 5 5 of Fig. 2.

Referring to the drawings in" detail, 20 is a door enclosure which 'comprises the curved wall sections 2 I, the ceiling 22 and the ioor 23. In the ceiling 22 is a slot 24 for the door column. Mounted above the ceilingare channelled rails 25 constituting a track for the door trolley 25 which is provided with wheels 2l running on the track. Fixed to'the track are stops 3U and 3| provided with striker blocks 32 and 33. Mounted on the trolley are latches 34, 35 adapted to engage With the respective striker blocks. The latches are pivoted on pins 36 and each is provided with an operating arm 31. The door comprises a central column 40 on which are pivotally mounted in any suitable manner a plurality of leaves 4|, preferably four in number. Means are provided whereby the leaves may be locked in radial position when the revolving feature of the door is being utilized, such means being well understood and therefore not beingillustrated in forming part of this specificasection on the line detail herein; The leaves may also be folded together in'any well understood manner so as to permit. the doo-r to be moved to one side of the door opening. For instance, the leaves may be folded in. pairs extending diametrically from the door column. The column 4D is suspended from theV trolley by means of a block 45 xedon the column which bears on'a suitable anti-friction bearing 45 which is mounted in a carrier member 41. The carrier the trolley frame in such manner as to permit of a limited universal movement of the door column'so as to permit the latter to hang vertically and insure the free movement of the door in its housing and also to permit actuation of the 154:

latches in themanner hereinafter explained. To secure the universal movement described any well known means may be employed. In the construction illustrated, the bearing member 4l is provided with cylindrical bearing surfaces' 48 2b which rest in correspondingly shaped grooves in the gimbal ring or cradle 49.4 The gimbal ring or cradle is provided with trunnions which rest in recesses 5l in the side members of the trolley frame.- are preferably further supported in true position with respect to the carrier 4l by means of an anti-friction bearing 55.- In the construction' illustrated, the carrier block 47 also Carries a governor housing 60 to be described more in detail 3,04

below and the corner 6l of this governor housing is adapted to engage the arm 31 of the latch 35 torelease such latch when the door column is pushed towards the right as shown in Figure lso as to tilt the carriervblock 41 and gimbal ring 35` on the trunnions 50. When the door columnris swung in the opposite direction ahorn 62 carried by the carrier block 4l is adapted to engage the arm 3l of the other latch 34.

Assuming the door to be the door housing and the door column to be vertical, the latch 35 will be in engagement with the striker block 33 and the trolley locked in central position over the door housing.. At its lower end the column'will be heldin central usualbottompivot 56 ttingin a socket in the oor. Ifitl be desired now to move the door to one side of the door housing, the leaves Will rst be folded up as shown in Figures 1 and 2 andthe bottom pivot retracted from the floor socket in the 50 housing into engagement with the latch arm and member 4l is supported on 10 The block 45 and door column in central position in 40 position by the 45 release the latch 35, whereupon the door and trolley will move to the right. When the door reaches the limit of travel it will be stopped by engagement of the end of the trolley with the striker block 32 and at the same time the latch 34 will ride over the surface of the striker block and engage behind the same, thereby locking the trolley in its side position. To return the door to central position the door is merely pulled out towards the center whereby at first it will swing'to the left and release the latch and then the"- trolley will move towards the center until the latch 35 engages with the striker block 33.

In order that the speed of rotation of the door may be regulated to a desired maximum, and spinning prevented, governing means are preferably provided, and we have shown in Figures 2 to 5 a preferred form of friction regulating'means for this purpose. As here illustrated, the carrier member 41 of the trolley is provided with a governor housing 60. Fixed on the upper end of the door column 40 is a Vgear 90 which extends into the'governor housing and meshes with a pinion 9| mounted on a shaft 92 supported in a bearing 93 in the lower part of the governor housing and in a bearing 94 in the cover plate of the housing. Also xed to the shaft 92 is a rotary table |00`which carries the governor mechanism. A pair of brake shoes |0| are provided which are pivoted on pins |02 which are mounted in the table and in bracket plates |03 fixed to the table by means of screws |04 and |05. Thebrake shoes are provided with strengthening ribs |01and with surfaces of suitable friction' material |I| which engage with the inner surface I2 of the housing,- such surface constituting a stationary brake drum.' Centrifugal means are provided for causing the brake shoes to engage: the brake drum, such means comprising the weights I5 mounted on the ends of levers ||6 which are pivoted on pins in the bracket plates |03. The levers I I6 are preferably channel shaped, as shown in Figures 3 to'5 and are provided with lugs |20 which engage with lugsY |2| on the brake shoes, as shown in Figure 2, whereby the centrifugal Vforce of the weights ||5 is applied tothe brake shoes in multiplied ratio, depending upon the relative lengths of the lever arms. Each weight I5 is secured upon the associated lever VI I6 by means of aV screw 'I Isa. In order to enable the effectiveness of the weights to be adjusted through a wide range, provision is made in the lever ||9 of a plurality of threaded bores |61) which may be selectively used so as to mount the lweight at different distances from the pivot pins upon whichthe lever is mounted.

For holding the brake shoes out of engagement with the-brake drum until the desired maximum speed has been reached and in order to regulate such speed, springs: |25 Yare provided which bear against surfaces |26 on the bracket plates |03 and which are universally connected to the brake shoes by'means of rods |21 engaging pins |28 von the ends of the brake shoes. The tension of the springs |25may be adjusted-by means of nuts' |30 screwing on the ends of rods |21. The springs draw Vthe brake shoes away from the brake drum until a suicient speed of rotation is reached to cause the centrifugal force of the weights I5 to overcome the spring tension, whereupon the braking force will be applied and the speed of the door checked. Until this speed is reached no braking effect is produced and the doorrevolves freely. By adjusting the tension of the springs by means of the nuts |30 the speed at which the braking force will be applied may be varied.

It is a feature that the rods |21 are connected to the ends of the brake shoe ribs and that they extend non-radially so that they may pass the governor shaft. This arrangement has several advantages. The rods |21 and the springs |25 maybe made long enough :to afford a very substantial range-of spring adjustment. It is uny necessary for the rod to be passed through an aperture in the lever I6 for connection with the brake shoe. The rod, moreover, is so located that it does not interfere with adjustment of the weight to dierent positions along the lever IIB.

While we have illustrated and described in detail certain preferred forms of our invention, it is to be understood that changes may be made therein Yand the invention embodied in other structures. We do not, therefore, desire to limit ourselves to the specific constructions illustrated,

b'ut intend to cover our invention broadly in Whatever form its principle may be utilized.

We claim:

l. In a revolving door, a doorenclosure, a track mounted` above the same, a trolley mounted on said track, a carrier-mounted on said trolleyto have limited universal movement with respectthereto,` a door column carried by said carrier, door leaves pivotally mounted on said column, centrifugal friction brake mechanism mounted on said door column carrier and'driving connections from said door column to said friction @brake mechanism, said centrifugal friction brake mechanism and driving connections moving with said door column carrier as said door column carrier` may be tilted by movements orv adjustments of said door column whereby said driving connections are unaffected byvmovements of the door column carrier. 2, In ja revolving door, a door enclosure, a trac mounted above the same, a trolley mounted on. said track, a carrier mounted on said trolley to have'limited universal movement with respect thereto, a door? column carried by said. carrier, door leaves pivotally mounted on said column, a governor housing carried by said carrier `having a xed braking surface therein, centrifugally controlled frictionv means for engaging said braking surface, a rotatable shaft carried bysaid governor housing for driving said means, a pinion on said shaft and a gear on the upper part of said door column for driving saidV pinion, said governor housing, centrifugal brake means, rotatable shaft and pinion movingfwith saiddoor column-and door column carrier whenever the same are tilted whereby the driving connection between the door column and the centrifugal brake means `1s un; affected by `tilting movement of the carrier. 3. A, door supporting trolley for revolving doors comprising-aV wheeled carriage, Va cradle mounted to tilt thereon about a horizontal axis, a door column carrier mountedV on said cradle to-tilt aboutV an axis at right angles to th'e'axis of tilt of. said cradle, a. friction governor housing mounted onsaid Vdoor'column carrier and adapted to tilttherewith and having a fixed braking surface therein, centrifugal' braking means mounted in said housing and having a movable braking 'surface adapted to be broughtV into braking engage- ,mentV with'said fixed brakingsurface by centrifugal action, anddriving means for said centrifuga'l braking means adapted to be driven from a door column carried by said door column car-r rier. f

il lliiv a revolving door, a door enclosuraatmc mounted above the same, a trolley mounted on said track, a carrier mounted on said trolley to have limited movement with respect thereto, a door column rotatably supported by said carrier, door leaves pivotally mounted on said column, a gear on the upper end of said door column, a governor housing mounted horizontally upon said carrier and not extending substantially outside the lateral bounds of the track, the inner wall of the housing constituting a brake drum, a Vertically disposed shaft rotatably mounted in said housing, spur gearing forming a driving connection between the gear on the door column and said shaft, a horizontal rotary table mounted on said shaft and centrifugally controlled friction means supported on the table and Within the housing for engaging said brake drum.

5. In a revolving door, a door enclosure, a track mounted above the enclosure, a trolley mounted on said track, a carrier mounted on said trolley to have limited movement with respect thereto, a door column rotatably supported by the carrier, door leaves collapsibly mounted on the column, a gear on the upper end of the door column, a governor housing mounted horizontally upon said carrier and confined substantially to the lateral bounds of the track, the inner wall of the housing constituting a brake drum, a vertically disposed shaft rotatably mounted in said housing, spur gearing forming a driving connection between the g-ear on the door column and said shaft, a horizontal rotary table mounted on said shaft, and centrifugally controlled friction means supported on the table and Within the housing for co-operating with the brake drum to check the speed of rotation of the door When a predetermined speed has been reached comprising brake shoes pivoted on the table, Weight levers pivoted on the table inside the brake shoes, Weights adjustably mounted on the weighted levers, and means yieldingly urging the brake shoes away from the brake drum.

6. In a revolving door, a door enclosure, a track mounted above the enclosure, a trolley mounted on said track, a carrier mounted on said trolley to have limited movement with respect thereto, a door colunm rotatably supported by the carrier, door leaves collapsibly mounted on the column, a gear on the upper end of the door column, a governor housing mounted horizontally upon said carrier and confined substantially to the lateral bounds of the track, the inner wall of the housing constituting a brake drum, a vertically disposed shaft rotatably mounted in said housing, spur gearing forming a driving connection between the gear .on the door column and said shaft, a horizontal rotary table mounted on said shaft and centrifugally controlled friction means supported on the table and within the housing for cooperating with the brake drum to check the speed of. rotation of the door when a predetermined speed has been reached comprising brake shoes pivoted on the table, weight levers pivoted on the table inside the brake shoes, weights carried by the Weighted levers, springs for normally holding the brake shoes out of engagement with the brake drum, tension rods connecting the springs to the ends of the respective brake shoes, and means for adjusting the stress of the springs.

7. In a revolving door, a door enclosure, a track mounted above the enclosure, a trolley mounted on said track, a carrier mounted on said trolley to have limited movement with respect thereto, a door column rotatably supported by the carrier, door leaves collapsibly mounted on the column, a gear on the upper end of the 'door column, a governor housing mounted horizontally upon said carrier and confined substantially to the lateral bounds of the track, the inner Wall of the housing constituting a brake drum, a vertically disposed shaft rotatably mounted in said housing,

spur gearing forming a driving connection between the gear on the door column and said shaft, a horizontal rotary table mounted on said shaft and centrifugally controlled friction means supported on the table and within the housing for cooperating with the brak-e drum to check the speed of rotation of the door when a predetermined speed has been reached comprising brake shoes pivoted on the table, weight levers pivoted on the table inside the brake shoes, Weights carried by the Weighted levers, springs for normally holding the brake shoes out of engagement With the brake drum, tension rods connecting the springs to the ends of the respective brake shoes, and means for adjusting the stress of the springs, said tension rods being universally connected to the ends of the brake shoes and extending nonradially past the center of the table.

EDMUND PEREMI. CHARLES KISH. 

